The work presents theoretical analysis of applicability of a waveguide current sensors with external conversion (OFCSEC) in a power protection system. In such case the OFCS-EC sensor serves as a current transformer. Therefore due to its functionality it can be called an optical fiber current transformer. The considerations presented in this work are focused on potential for simultaneous application of many wavelengths. This concept renders the OFCS-EC sensor tunable depending on needs. It opens new possibilities for application of OFCS-EC sensors in power systems.
In this work are presented possibilities of using optical fiber current sensors with external conversion in power protection
(PP) of high power protection system. From the standpoint of the PP the most important is that the secondary signal
(from the current transformer) is accurately reflecting the primary signal (current). Quality of this process is
characterized by signal parameters such as: shape, amplitude, phase, number of transformed harmonics of the signal. The
tests were performed on a measuring setup allowing simulation of real conditions using an air magnetic coil. Results of
tests proved very good dynamic properties of the sensor allowing its application as an element of a power protection
system.
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